WO2022206833A1

WO2022206833A1 - Display panel and electronic device

Info

Publication number: WO2022206833A1
Application number: PCT/CN2022/084054
Authority: WO
Inventors: 杨文强; 吴俊纬
Original assignee: 维沃移动通信有限公司
Priority date: 2021-04-02
Filing date: 2022-03-30
Publication date: 2022-10-06
Also published as: CN112864216A

Abstract

The present application belongs to the technical field of display, and disclosed are a display panel and an electronic device. The display panel comprises: a base substrate, which comprises a first display area and a second display area; a plurality of first pixels and a plurality of second pixels, wherein the plurality of first pixels are located in the first display area, the second pixels comprise a second light-emitting device, the second light-emitting device being located in the second display area, and the density of the first pixels is greater than the density of the second pixels; and a plurality of filling patterns, which are arranged in the area of the second display area that is not covered by the second light-emitting device, wherein the filling patterns are made of transparent materials.

Description

Display panels and electronic equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202110360810.8 filed in China on Apr. 02, 2021, the entire contents of which are hereby incorporated by reference.

technical field

The present application belongs to the field of display technology, and in particular relates to a display panel and an electronic device.

Background technique

In recent years, with the popularity of full-screen displays, the screen-to-body ratio continues to increase, leaving more and more limited positions for cameras and other sensors on the front surface of electronic devices. In order to increase the screen ratio, the under-screen camera design is gradually being adopted. However, the existing organic light-emitting diode (OLED) display panel has low light transmittance due to the influence of the circuit in the panel, which leads to the poor photographing effect of the under-screen camera when taking pictures through the screen. . In order to improve the light transmittance, the number of pixels in the display area facing the camera is usually reduced. Therefore, the pixel arrangement design of the display area facing the camera is different from that of other normal display areas. This difference It will cause moiré patterns on the display panel during display, which will affect the display effect.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a display panel and an electronic device, which can solve the problem in the prior art due to the difference between the pixel arrangement design of the display area facing the camera and the pixel arrangement design of other normal display areas. There is a problem of moiré, which affects the display effect.

In order to solve the above technical problems, this application is implemented as follows:

In a first aspect, an embodiment of the present application provides a display panel, including:

a base substrate, the base substrate includes a first display area and a second display area, the first display area at least partially surrounds the second display area;

A plurality of first pixels and a plurality of second pixels, a plurality of the first pixels are located in the first display area, the second pixels include a second light-emitting device, and the second light-emitting device is located in the second display area area, the density of the first pixel is greater than the density of the second pixel;

A plurality of filling patterns are arranged in the area of the second display area that is not covered by the second light emitting device, and the filling patterns are made of transparent materials.

Optionally, the second pixel further includes a second pixel circuit, the second pixel circuit is connected to the second light-emitting device, the base substrate further includes a non-display area, and the second pixel circuit is located at the the non-display area.

Optionally, at least part of the wires in the second display area are made of transparent metal oxide material.

Optionally, the second light-emitting device includes an anode, a cathode, and an organic light-emitting layer located between the anode and the cathode, the anode is located in the second display area of the base substrate, and the filling pattern is the same as the The anodes are arranged in the same layer and the same material.

Optionally, the first pixel includes a first pixel circuit and a first light-emitting device, the first pixel circuit is connected to the first light-emitting device, and the first pixel circuit is located on the first side of the base substrate. In the display area, the first light emitting device is located on a side of the first pixel circuit away from the base substrate.

Optionally, a reflective layer is further disposed between the first pixel circuit and the base substrate.

Optionally, the area of the opening area of at least part of the second pixel is smaller than the area of the opening area of the first pixel.

Optionally, the filling pattern is made of ITO material.

Optionally, the first pixel includes multiple rows and multiple columns, the second pixel includes multiple rows and multiple columns, and the row of the second pixel is aligned with the row of the first pixel, and the second pixel includes multiple rows and multiple columns. The column is aligned with the column of the first pixel, there is a column of the first pixel between the columns where the adjacent second pixels in the same row are located, and the filling pattern is set in this column, and the adjacent second pixels in the same column are located in the column. Between the rows where the pixels are located, there is a row of the first pixel, and the filling pattern is arranged in this row.

In a second aspect, an embodiment of the present application provides an electronic device, the electronic device includes the display panel according to the first aspect, and further includes a camera, the camera is located directly opposite a second display area of the display panel area.

In the embodiment of the present application, by setting the filling pattern in the area of the second display area that is not covered by the second light-emitting device, on the basis of not affecting the original light transmittance, the uniformity of the display can be effectively improved, and the Moiré effect and diffraction effect caused by the difference in pixel arrangement between the first display area and the second display area.

Description of drawings

FIG. 1 is a schematic diagram of a stacked structure of a display panel according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a pixel arrangement of a display panel according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a first pixel and a second pixel according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between "first", "second", etc. The objects are usually of one type, and the number of objects is not limited. For example, the first object may be one or more than one. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

The display panel and the electronic device provided by the embodiments of the present application will be described in detail below through specific embodiments and application scenarios with reference to the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 , FIG. 1 is a schematic diagram of a stacked structure of a display panel provided by an embodiment of the present application, and FIG. 2 is a schematic diagram of a pixel arrangement of a display panel provided by an embodiment of the present application. As shown in FIG. 1 and FIG. 2 , the display panel provided in the embodiment of the present application is applied to an electronic device. The display panel includes a base substrate 101, and the base substrate 101 includes a first display area and a second display area. A display area at least partially surrounds the second display area, and the second display area may be disposed opposite to the camera 111 of the electronic device. The display panel further includes a plurality of first pixels 112 and a plurality of second pixels 113 , wherein, A plurality of the first pixels 112 are located in the first display area on the base substrate 101, the plurality of the first pixels 112 may be distributed in an array, the second pixels 113 include a second light emitting device, and a plurality of the first pixels 112 may be arranged in an array. The second light-emitting devices of the two pixels 113 are located in the second display area on the base substrate 101 , and the second light-emitting devices of a plurality of the second pixels 113 may be distributed in an array. Optionally, the pixel density of the first display area is greater than the pixel density of the second display area, that is, the pixel density of the first pixels 112 arranged in the first display area is greater than that of the second display area. The pixel density of the second pixel 113 in the region. By reducing the pixel density of the second display area, the light transmittance of the second display area can be improved, thereby improving the shooting effect of the camera 111 . Since the layout design (such as pixel density, etc.) of the first pixels 112 in the first display area and the second pixels 113 in the second display area is inconsistent, it will cause moire on the display panel, resulting in uneven display, diffraction and other problems. Therefore, the display panel in the embodiment of the present application further includes a plurality of filling patterns 114, and the plurality of filling patterns 114 are arranged in the area of the second display area that is not covered by the second light-emitting device of the second pixel 113. The filling pattern 114 is made of transparent materials, specifically, can be made of transparent metal materials such as indium tin oxide (ITO), indium zinc oxide (Indium Zinc Oxide, IZO), so as to improve the light transmittance of the second display area, The photographing effect of the camera 111 is improved, and by using the filling pattern 114 with no electrical function for filling, moiré or diffraction or uneven display can be avoided on the display panel, thereby ensuring the display effect of the display panel.

Therefore, in the embodiment of the present application, by setting the filling pattern in the area of the second display area that is not covered by the second light-emitting device, the uniformity of the display can be effectively improved without affecting the original light transmittance. , reducing the moiré effect and diffraction effect caused by the difference in pixel arrangement between the first display area and the second display area.

As shown in FIG. 2 , in some embodiments of the present application, the first pixel 112 includes multiple rows and multiple columns, the second pixel 113 also includes multiple rows and multiple columns, and the row of the second pixel 113 is the same as the row of the first pixel 112 Aligned, the columns of the second pixels 113 are aligned with the columns of the first pixels 112 . There is a column of the first pixel 112 between the two columns where the adjacent second pixels 113 of the same row are located, and the filling pattern 114 is arranged in this column, and the adjacent second pixels 113 of the same column are located in the column. There is a row of the first pixel 112 between the two rows, and the filling pattern 114 is arranged in this row. That is to say, the first pixels 112 are arranged in rows and columns, but the first pixels 112 are only located in the first display area, and the second display area should be provided with the second pixels 113, so the second pixels 113 and the filling pattern 114 continue to follow the first The arrangement of the pixels 112 is arranged, that is, in the second display area, the second pixels 113 and the filling patterns 114 are arranged at intervals in the row direction, and the second pixels 113 and the filling patterns 114 are also arranged at intervals in the column direction. cloth, which is equivalent to replacing the first pixel 112 with the second pixel 113 and the filling pattern 114 in the second display area.

Please refer to FIG. 3 , which is a schematic structural diagram of a first pixel and a second pixel according to an embodiment of the present application. As shown in FIG. 3 , in the embodiment of the present application, the second pixel 113 further includes a second pixel circuit 1131 , and the second pixel circuit 1131 is connected to the second light emitting device 1132 to drive the second light emitting device 1132 to emit light. The base substrate 101 also includes a non-display area. In order to improve the light transmittance of the second display area, the second pixel circuit 1131 of the second pixel 113 in the second display area is separated from the second light emitting device 1132, that is, only The second light-emitting device 1132 is arranged in the second display area, and the second pixel circuit 1131 is arranged in the non-display area, so as to avoid the blocking and reflection of the light transmitted by the second pixel circuit 1131 to the second display area, so as to improve the compatibility with the second display area. The shooting effect of the camera 111 facing the second display area.

In some embodiments of the present application, at least part of the traces 108 in the second display area located on the base substrate 101 are made of transparent metal oxide material, compared with the traces made of metal alloy materials in the prior art The use of transparent metal oxide materials can avoid the diffraction effect and increase the light transmitted through the second display area. It can be known that the more traces are made of transparent metal oxide materials, the light transmittance of the second display area will also be reduced. higher. Optionally, the transparent metal oxide may be any one of ITO and IZO. The second display area wiring 108 may include a connection line between the second pixel circuit 1131 and the second light emitting device 1132, and may also include a data signal line and an initialization signal line passing through the second display area.

As shown in FIG. 1 , in some embodiments of the present application, the second light-emitting device 1132 includes a second anode 109 , a cathode 105 and a second organic light-emitting layer 110 located between the second anode 109 and the cathode 105 , wherein the second The anode 109 is located in the second display area of the base substrate 101 . Optionally, the second anode 109 is made of a transparent metal oxide material, and specifically, any one of ITO and IZO can be selected.

In some embodiments of the present application, the second pixel may include a second red sub-pixel, a second green sub-pixel and a second blue sub-pixel, the second red sub-pixel, the second green sub-pixel and the second blue sub-pixel The sub-pixels can share the cathode 105, and the second organic light-emitting layer 110 includes a second red organic light-emitting layer 1101, a second green organic light-emitting layer 1102, and a second blue organic light-emitting layer 1103, and the second red sub-pixel is composed of a second anode 109. , the second red organic light-emitting layer 1101 and the cathode 105 are composed, the second green sub-pixel is composed of the second anode 109, the second green organic light-emitting layer 1102 and the cathode 105, the second blue sub-pixel is composed of the second anode 109, the second The blue organic light-emitting layer 1103 and the cathode 105 are constituted.

In other embodiments of the present application, the first pixel 112 includes a first pixel circuit 1121 and a first light-emitting device 1122, and the first pixel circuit 1121 is connected to the first light-emitting device 1122 to drive the first light-emitting device 1122 to emit light. Both the pixel circuit 1121 and the first light-emitting device 1122 are located in the first display area of the base substrate 101. Specifically, the first pixel circuit 1121 is located in the first display area of the base substrate, and the first light-emitting device 1122 is located in the first pixel The side of the circuit 1121 facing away from the base substrate 101 . Optionally, the first light emitting device 1122 includes a first anode 103 , a cathode 105 and a first organic light emitting layer 104 located between the first anode 103 and the cathode 105 .

The first pixel 112 may include a first red sub-pixel, a first green sub-pixel and a first blue sub-pixel, and the first red sub-pixel, the first green sub-pixel and the first blue sub-pixel may share a cathode 105, and the first organic light-emitting layer 104 includes a first red organic light-emitting layer 1041, a first green organic light-emitting layer 1042 and a first blue organic light-emitting layer 1043, and the first red sub-pixel consists of the first anode 103, the first red organic light-emitting layer The light-emitting layer 1041 and the cathode 105 are formed, the first green sub-pixel is formed by the first anode 103, the first green organic light-emitting layer 1042 and the cathode 105, the first blue sub-pixel is formed by the first anode 103, the first blue organic light-emitting layer 1043 and the cathode 105 constitute. A pixel circuit layer 1120 is provided on the side of the first anode 103 close to the base substrate 101 . The pixel circuit layer 1120 includes a plurality of first pixel circuits 1121 and is further provided between the first pixel circuits 1121 and the base substrate 101 There is a reflective layer 102. When the second pixel 112 emits light, a part of the light is emitted directly from the front of the display panel, while the other part of the light is emitted to the side of the base substrate 101 and is reflected by the reflective layer 102. When the resonant frequencies of the two parts of the light are the same. When matched, it can generate light that is about 1.5 to 2 times stronger than the original emitted light, and exit from the front of the display panel. This phenomenon is called the microcavity effect of the display panel, which can significantly improve the light efficiency. Optional, The reflective layer 102 is a silver metal layer.

As shown in FIG. 2 , in some embodiments of the present application, the area of the opening area of at least some of the second pixels 112 is smaller than the area of the opening area of the first pixel 111 . By reducing the design size of the second pixel 112 in the second display area, The light transmittance of the second display area can be improved, thereby improving the shooting effect of the camera 111 .

In other embodiments of the present application, when the first anode 103 and the second anode 109 are both made of ITO material, in order to simplify the process, the filling pattern 114 is also made of ITO material.

Another embodiment of the present application further provides an electronic device, the electronic device includes the display panel according to any one of the above embodiments, and further includes a camera, and the camera is located in the front of the second display area of the display panel. to the area. By setting the filling pattern in the area of the second display area that is not covered by the second light-emitting device, on the basis of not affecting the original light transmittance, the display uniformity of the display panel can be effectively improved, and the The moiré effect and diffraction effect caused by the difference in the pixel arrangement of the second display area, and the transparent material used for the filling pattern can ensure the light transmittance, thereby ensuring the imaging effect of the camera under the screen.

The electronic device in this embodiment of the present application may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (personal digital assistant). assistant, PDA), etc., the non-mobile electronic device may be a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., which are not specifically limited in the embodiments of the present application.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in the reverse order depending on the functions involved. To perform functions, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to some examples may be combined in other examples.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims

A display panel, comprising:

a base substrate, the base substrate includes a first display area and a second display area, the first display area at least partially surrounds the second display area;

A plurality of first pixels and a plurality of second pixels, a plurality of the first pixels are located in the first display area, the second pixels include a second light-emitting device, and the second light-emitting device is located in the second display area area, the density of the first pixel is greater than the density of the second pixel;

A plurality of filling patterns are arranged in the area of the second display area that is not covered by the second light emitting device, and the filling patterns are made of transparent materials.
The display panel according to claim 1, wherein the second pixel further comprises a second pixel circuit, the second pixel circuit is connected to the second light emitting device, and the base substrate further comprises a non-display area, The second pixel circuit is located in the non-display area.
The display panel according to claim 2, wherein at least part of the wires in the second display area are made of transparent metal oxide material.
The display panel of claim 1, wherein the second light emitting device comprises an anode, a cathode, and an organic light emitting layer located between the anode and the cathode, and the anode is located on the second side of the base substrate In the display area, the filling pattern and the anode are arranged in the same layer and material.
The display panel of claim 1, wherein the first pixel comprises a first pixel circuit and a first light emitting device, the first pixel circuit is connected to the first light emitting device, and the first pixel circuit is located in In the first display area of the base substrate, the first light emitting device is located on a side of the first pixel circuit away from the base substrate.
The display panel according to claim 5, wherein a reflective layer is further provided between the first pixel circuit and the base substrate.
The display panel of claim 1 , wherein at least part of the opening area of the second pixel is smaller than the opening area of the first pixel.
The display panel of claim 1, wherein the filling pattern is made of ITO material.
The display panel according to claim 1, wherein the first pixel includes multiple rows and multiple columns, the second pixel includes multiple rows and multiple columns, and the row of the second pixel is the same as the row of the first pixel Alignment, the column of the second pixel is aligned with the column of the first pixel, there is a column of the first pixel between the columns where the adjacent second pixels of the same row are located, and the filling pattern is set in this column, There is a row of the first pixel between the rows where the adjacent second pixels of the same column are located, and the filling pattern is arranged in this row.
An electronic device, comprising the display panel according to any one of claims 1-9, further comprising a camera, the camera being located in an area facing the second display area of the display panel.